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Northwest Africa 4289
Basic information Name: Northwest Africa 4289
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 4289
Observed fall: No
Year found: 2005
Country: (Northwest Africa)
Mass:help 14.5 g
Classification
  history:
Meteoritical Bulletin:  MB 91  (2007)  Howardite
Recommended:  Howardite    [explanation]

This is 1 of 372 approved meteorites classified as Howardite.   [show all]
Search for other: Achondrites, HED achondrites, and Howardites
Comments: Approved 28 Mar 2007
Writeuphelp
Writeup from MB 91:

Northwest Africa 4289

Algeria

Find: 2005

Achondrite (howardite)

History: A stone was found in Algeria in 2005 and purchased in Erfoud, Morocco, in November 2005.

Physical characteristics: Relatively fresh fusion crust covers the entire 14.7 g stone with the exception of tiny impact spallation areas.

Physical characteristics: Fine-grained breccia, clast size <4 mm, composed of eucrite basalts, diogenite, and impact melt clasts.

Mineral compositions: (J. Wittke and T. Bunch, NAU) Subophitic basalt host pigeonite (Fs57.6Wo7.1; FeO/MnO = 34), exsolved augite (Fs21.7Wo41), plagioclase (An92). The diogenite pyroxenes (Fs21.7–26.8Wo1.6–4.1; FeO/MnO = 28–30).

Classification: Achondrite (howardite).

Type specimen: A total of 3.7 g and one thin section are on deposit at NAU. Thompson is the main mass holder.

Data from:
  MB91
  Table 2
  Line 280:
Place of purchase:Erfoud, Morocco
Date:2005
Mass (g):14.7
Pieces:1
Class:How
Classifier:T. Bunch and J. Wittke, NAU
Type spec mass (g):3.7
Type spec location:NAU
Main mass:Thompson
Institutions
   and collections
NAU: Geology, Bldg 12 Knoles Dr Northern Arizona University, Flagstaff, AZ 86011, United States; Website (institutional address; updated 12 Apr 2012)
Thompson: Edwin Thompson, 5150 Dawn St., Lake Oswego, OR 97035, United States (private address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 91, MAPS 42, 413-466 (2007)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6900 approved meteorites from (Northwest Africa) (plus 2035 unapproved names)

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